/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.dx.cf.attrib;

import com.android.dx.rop.cst.CstNat;
import com.android.dx.rop.cst.CstType;

/**
 * Attribute class for standards-track {@code EnclosingMethod} attributes.
 */
public final class AttEnclosingMethod extends BaseAttribute {

	/** {@code non-null;} attribute name for attributes of this type */
	public static final String ATTRIBUTE_NAME = "EnclosingMethod";

	/** {@code non-null;} the innermost enclosing class */
	private final CstType type;

	/**
	 * {@code null-ok;} the name-and-type of the innermost enclosing method, if
	 * any
	 */
	private final CstNat method;

	/**
	 * Constructs an instance.
	 * 
	 * @param type
	 *            {@code non-null;} the innermost enclosing class
	 * @param method
	 *            {@code null-ok;} the name-and-type of the innermost enclosing
	 *            method, if any
	 */
	public AttEnclosingMethod(CstType type, CstNat method) {
		super(ATTRIBUTE_NAME);

		if (type == null) {
			throw new NullPointerException("type == null");
		}

		this.type = type;
		this.method = method;
	}

	/** {@inheritDoc} */
	public int byteLength() {
		return 10;
	}

	/**
	 * Gets the innermost enclosing class.
	 * 
	 * @return {@code non-null;} the innermost enclosing class
	 */
	public CstType getEnclosingClass() {
		return type;
	}

	/**
	 * Gets the name-and-type of the innermost enclosing method, if any.
	 * 
	 * @return {@code null-ok;} the name-and-type of the innermost enclosing
	 *         method, if any
	 */
	public CstNat getMethod() {
		return method;
	}
}
